Preface

Abstract

We present to the readers of the Journal of Telecommunications and Information Technologies a special issue that mostly contains the papers from last year conference on Decision Support for Telecommunications and Information Society, which concerned diverse mathematical and computational techniques for supporting solutions of numerous problems in telecommunication networks, related markets and technology.
Włodzimierz Ogryczak and Paweł Olender in the paper On MILP Models for the OWA Optimization consider the ordered weighted averaging (OWA) aggregation that uses the weights assigned to the ordered values (i.e., to the largest value, the second largest and so on) rather than to the specific coordinates. It allows to evaluate solutions impartially when distribution of outcomes is more important than assignments of these outcomes to the specific criteria. This applies, for example, to systems with multiple independent users or agents whose objectives correspond to the criteria. The authors concentrate on the most efficient computationally approaches to solving mixed integer linear programming OWA problems and they present several computational experiments on such problems. (...)